/**
* Extracts the value from a literal.
*
* <p>Cases:
*
* <ul>
* <li>If the node is a character literal, a chain of string literals, or a CAST of a character
* literal, returns the value as a {@link NlsString}.
* <li>If the node is a numeric literal, or a negated numeric literal, returns the value as a
* {@link BigDecimal}.
* <li>If the node is a {@link SqlIntervalQualifier}, returns its {@link TimeUnitRange}.
* <li>If the node is INTERVAL_DAY_TIME in {@link SqlTypeFamily}, returns its sign multiplied by
* its millisecond equivalent value
* <li>If the node is INTERVAL_YEAR_MONTH in {@link SqlTypeFamily}, returns its sign multiplied
* by its months equivalent value
* <li>Otherwise the behavior is not specified.
* </ul>
*/
public static Comparable value(SqlNode node) {
if (node instanceof SqlLiteral) {
SqlLiteral literal = (SqlLiteral) node;
switch (literal.getTypeName().getFamily()) {
case CHARACTER:
return (NlsString) literal.value;
case NUMERIC:
return (BigDecimal) literal.value;
case INTERVAL_YEAR_MONTH:
final SqlIntervalLiteral.IntervalValue valMonth =
(SqlIntervalLiteral.IntervalValue) literal.value;
return valMonth.getSign() * SqlParserUtil.intervalToMonths(valMonth);
case INTERVAL_DAY_TIME:
final SqlIntervalLiteral.IntervalValue valTime =
(SqlIntervalLiteral.IntervalValue) literal.value;
return valTime.getSign() * SqlParserUtil.intervalToMillis(valTime);
}
}
if (SqlUtil.isLiteralChain(node)) {
assert node instanceof SqlCall;
final SqlLiteral literal = SqlLiteralChainOperator.concatenateOperands((SqlCall) node);
assert SqlTypeUtil.inCharFamily(literal.getTypeName());
return (NlsString) literal.value;
}
if (node instanceof SqlIntervalQualifier) {
SqlIntervalQualifier qualifier = (SqlIntervalQualifier) node;
return qualifier.timeUnitRange;
}
switch (node.getKind()) {
case CAST:
assert node instanceof SqlCall;
return value(((SqlCall) node).operand(0));
case MINUS_PREFIX:
assert node instanceof SqlCall;
Comparable o = value(((SqlCall) node).operand(0));
if (o instanceof BigDecimal) {
BigDecimal bigDecimal = (BigDecimal) o;
return bigDecimal.negate();
}
// fall through
default:
throw Util.newInternal("invalid literal: " + node);
}
}
public static SqlNumericLiteral createExactNumeric(String s, SqlParserPos pos) {
BigDecimal value;
int prec;
int scale;
int i = s.indexOf('.');
if ((i >= 0) && ((s.length() - 1) != i)) {
value = SqlParserUtil.parseDecimal(s);
scale = s.length() - i - 1;
assert scale == value.scale() : s;
prec = s.length() - 1;
} else if ((i >= 0) && ((s.length() - 1) == i)) {
value = SqlParserUtil.parseInteger(s.substring(0, i));
scale = 0;
prec = s.length() - 1;
} else {
value = SqlParserUtil.parseInteger(s);
scale = 0;
prec = s.length();
}
return new SqlNumericLiteral(value, prec, scale, true, pos);
}
/**
* Checks whether an exception matches the expected pattern. If <code>
* sap</code> contains an error location, checks this too.
*
* @param ex Exception thrown
* @param expectedMsgPattern Expected pattern
* @param sap Query and (optional) position in query
*/
public static void checkEx(
Throwable ex, String expectedMsgPattern, SqlParserUtil.StringAndPos sap) {
if (null == ex) {
if (expectedMsgPattern == null) {
// No error expected, and no error happened.
return;
} else {
throw new AssertionError(
"Expected query to throw exception, "
+ "but it did not; query ["
+ sap.sql
+ "]; expected ["
+ expectedMsgPattern
+ "]");
}
}
Throwable actualException = ex;
String actualMessage = actualException.getMessage();
int actualLine = -1;
int actualColumn = -1;
int actualEndLine = 100;
int actualEndColumn = 99;
// Search for an CalciteContextException somewhere in the stack.
CalciteContextException ece = null;
for (Throwable x = ex; x != null; x = x.getCause()) {
if (x instanceof CalciteContextException) {
ece = (CalciteContextException) x;
break;
}
if (x.getCause() == x) {
break;
}
}
// Search for a SqlParseException -- with its position set -- somewhere
// in the stack.
SqlParseException spe = null;
for (Throwable x = ex; x != null; x = x.getCause()) {
if ((x instanceof SqlParseException) && (((SqlParseException) x).getPos() != null)) {
spe = (SqlParseException) x;
break;
}
if (x.getCause() == x) {
break;
}
}
if (ece != null) {
actualLine = ece.getPosLine();
actualColumn = ece.getPosColumn();
actualEndLine = ece.getEndPosLine();
actualEndColumn = ece.getEndPosColumn();
if (ece.getCause() != null) {
actualException = ece.getCause();
actualMessage = actualException.getMessage();
}
} else if (spe != null) {
actualLine = spe.getPos().getLineNum();
actualColumn = spe.getPos().getColumnNum();
actualEndLine = spe.getPos().getEndLineNum();
actualEndColumn = spe.getPos().getEndColumnNum();
if (spe.getCause() != null) {
actualException = spe.getCause();
actualMessage = actualException.getMessage();
}
} else {
final String message = ex.getMessage();
if (message != null) {
Matcher matcher = LINE_COL_TWICE_PATTERN.matcher(message);
if (matcher.matches()) {
actualLine = Integer.parseInt(matcher.group(1));
actualColumn = Integer.parseInt(matcher.group(2));
actualEndLine = Integer.parseInt(matcher.group(3));
actualEndColumn = Integer.parseInt(matcher.group(4));
actualMessage = matcher.group(5);
} else {
matcher = LINE_COL_PATTERN.matcher(message);
if (matcher.matches()) {
actualLine = Integer.parseInt(matcher.group(1));
actualColumn = Integer.parseInt(matcher.group(2));
}
}
}
}
if (null == expectedMsgPattern) {
if (null != actualException) {
actualException.printStackTrace();
fail(
"Validator threw unexpected exception"
+ "; query ["
+ sap.sql
+ "]; exception ["
+ actualMessage
+ "]; class ["
+ actualException.getClass()
+ "]; pos [line "
+ actualLine
+ " col "
+ actualColumn
+ " thru line "
+ actualLine
+ " col "
+ actualColumn
+ "]");
}
} else {
if (null == actualException) {
fail(
"Expected validator to throw "
+ "exception, but it did not; query ["
+ sap.sql
+ "]; expected ["
+ expectedMsgPattern
+ "]");
} else {
String sqlWithCarets;
if ((actualColumn <= 0)
|| (actualLine <= 0)
|| (actualEndColumn <= 0)
|| (actualEndLine <= 0)) {
if (sap.pos != null) {
AssertionError e =
new AssertionError(
"Expected error to have position,"
+ " but actual error did not: "
+ " actual pos [line "
+ actualLine
+ " col "
+ actualColumn
+ " thru line "
+ actualEndLine
+ " col "
+ actualEndColumn
+ "]");
e.initCause(actualException);
throw e;
}
sqlWithCarets = sap.sql;
} else {
sqlWithCarets =
SqlParserUtil.addCarets(
sap.sql, actualLine, actualColumn, actualEndLine, actualEndColumn + 1);
if (sap.pos == null) {
throw new AssertionError(
"Actual error had a position, but expected error"
+ " did not. Add error position carets to sql:\n"
+ sqlWithCarets);
}
}
if (actualMessage != null) {
actualMessage = Util.toLinux(actualMessage);
}
if ((actualMessage == null) || !actualMessage.matches(expectedMsgPattern)) {
actualException.printStackTrace();
final String actualJavaRegexp =
(actualMessage == null)
? "null"
: TestUtil.quoteForJava(TestUtil.quotePattern(actualMessage));
fail(
"Validator threw different "
+ "exception than expected; query ["
+ sap.sql
+ "];\n"
+ " expected pattern ["
+ expectedMsgPattern
+ "];\n"
+ " actual ["
+ actualMessage
+ "];\n"
+ " actual as java regexp ["
+ actualJavaRegexp
+ "]; pos ["
+ actualLine
+ " col "
+ actualColumn
+ " thru line "
+ actualEndLine
+ " col "
+ actualEndColumn
+ "]; sql ["
+ sqlWithCarets
+ "]");
} else if ((sap.pos != null)
&& ((actualLine != sap.pos.getLineNum())
|| (actualColumn != sap.pos.getColumnNum())
|| (actualEndLine != sap.pos.getEndLineNum())
|| (actualEndColumn != sap.pos.getEndColumnNum()))) {
fail(
"Validator threw expected "
+ "exception ["
+ actualMessage
+ "];\nbut at pos [line "
+ actualLine
+ " col "
+ actualColumn
+ " thru line "
+ actualEndLine
+ " col "
+ actualEndColumn
+ "];\nsql ["
+ sqlWithCarets
+ "]");
}
}
}
}
public static SqlNumericLiteral createApproxNumeric(String s, SqlParserPos pos) {
BigDecimal value = SqlParserUtil.parseDecimal(s);
return new SqlNumericLiteral(value, null, null, false, pos);
}
